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Assessing the robustness of the results of econometric analysis is a long standing subject of lively research. The … influential observations has received relatively little attention. A major obstacle in this context is masking, a phenomenon where … demonstrate the merits of these algorithms via simulation studies and empirical applications. These exercises show that masking …
Persistent link: https://www.econbiz.de/10012582044
This paper introduces a new class of robust regression estimators. The proposed twostep least weighted squares (2S-LWS) estimator employs data-adaptive weights determined from the empirical distribution, quantile, or density functions of regression residuals obtained from an initial robust fit....
Persistent link: https://www.econbiz.de/10012731904
This paper investigates the effects of using residuals from robust regression in place of OLS residuals in test statistics for the normality of the errors. It is found that for systematic and clustered outliers robustified normality tests yield greater power
Persistent link: https://www.econbiz.de/10012767596
In the causal inference literature a class of semi-parametric estimators is called robust if the estimator has desirable properties under the assumption that at least one of the working models is correctly specified. A standard example is a doubly robust estimator that specifies parametric...
Persistent link: https://www.econbiz.de/10011796394
Empirical research typically involves a robustness-efficiency tradeoff. A researcher seeking to estimate a scalar …
Persistent link: https://www.econbiz.de/10015073234
Dependent variables that are non-negative, follow right-skewed distributions, and have large probability mass at zero arise often in empirical economics. Two classes of models that transform the dependent variable y -- the natural logarithm of y plus a constant and the inverse hyperbolic sine --...
Persistent link: https://www.econbiz.de/10013477227
Persistent link: https://www.econbiz.de/10009753954
In this paper the task of identifying outliers in exponential samples is treated conceptionally in the sense of Davies and Gather (1989, 1993) by means of a so called outlier region. In case of an exponential distribution, an empirical approximation of such a region also called an outlier...
Persistent link: https://www.econbiz.de/10010467718
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